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I am super excited for this collaboration with folks from Environmental Molecular Sciences Laboratory (EMSL) Advanced Photon Source Joint Genome Institute as well as Neslihan Taş and Andrew Margenot and others!

What's the fate of N co-applied with P as ammonium phosphates? Here, we show that fall-applied MAP and DAP N is lost over the ensuring months. TSP avoids these N losses: a "right source" in the 4Rs. Led by Yuhei Nakayama and supported by Illinois Soybean Association sciencedirect.com/science/articl…

33P radiolabelling ammonium phosphate fertilizers reveals majority (78%–92%) of early growth (V7) corn P is soil-derived. Higher PUE for MAP (4.9%) than struvite (1.9%), though no difference in corn biomass. bsssjournals.onlinelibrary.wiley.com/doi/10.1111/ej…

Vertical (paleo)soil chronosequences offer an alternative to traditional space-for-time substitutions to test the Walker-Syers model of terrestrial P cycling. Our proof of concept from the glaciated landscapes of central North America using a 450k yr core: doi.org/10.1016/j.scit…

A big challenge of phosphorus fertility is that we can't always differentiate where fertilizer P molecules go. This study helps us to actually track the fate of fertilizer P into the plant. tl;dr early season plant P isn't derived from fertilizer, but from existing soil P pools

Position opening: Research Scientist in Biogeochemistry in the Institute for Sustainability, Energy, and Environment (ISEE) at University of Illinois iSEE at U of I We are looking for a Research Scientist to lead multiple projects on soil-water P. Apps due Oct 18 illinois.csod.com/ux/ats/careers…

Come push the boundaries of what is possible in soil science by developing workflows to train and segment 2/3D image data collected using SEM and X-ray imaging techniques across size scales (m to nm). Soil aggregate movie for reference! Advanced Photon Source Environmental Molecular Sciences Laboratory (EMSL) Joint Genome Institute

To what extent do calculated P balances reflect measured soil P stocks? After 145 years of crop rotation x fertilization , (i) +P balances > measured P stock differences, (ii) legacy P found across diverse fractions, (iii) P changes decoupled by depth doi.org/10.1111/ejss.7…

Strategies to quantify and reduce N2O emissions from crops focus on N fertilizer management. Here we show that ~40% of N2O emissions from the most extensive cropping system in North America (maize/soybean rot) occur during the unfertilized soybean phase rdcu.be/dY9Hf .

Do soil enzyme activity assays need buffers? No. Building on previous work, we find buffers (i) *suppress* activity of phosphatase and (ii) alter apparent kinetic properties relative to water. doi.org/10.1016/j.soil… With Skye & soils & JordonWade.bsky.social Natural Resources Conservation Service Soil Health Institute

How do methods for estimating soil P mineralization with radioisotopes stack up? How can they be improved? Newly published "In pursuit of soil P mineralization: A review and synthesis of radioisotopic labeling techniques" (SBB) provides a quant synthesis: doi.org/10.1016/j.soil…

New in A&EL! "Phosphate elution from anion-exchange membranes in soil analysis" by Suwei Xu and Andrew Margenot This study presents an improved way to measure resin-extractable phosphorus in soil. Read it here: doi.org/10.1002/ael2.7…

Research scientist position in our group now available. Experience in P biogeochemistry is preferred, but not essential. Large focus will be on stable and radioactive isotopes for evaluating soil-water-crop C, N, P and S transfers. illinois.csod.com/ux/ats/careers… iSEE at U of I

Long-term (>100 yr) experiments offer valuable insights to soil change under ag practices, but were designed before modern stats. How to navigate experimental design issues? Here we showcase an approach using the Morrow Plots in year 145 for SOC stocks: acsess.onlinelibrary.wiley.com/doi/10.1002/ae…

PERSPECTIVE Does the C:N:P 1:1:1 Ratio Hold? Examining Log‐Transformation Bias in Enzyme Stoichiometry 📄 buff.ly/Bg3NPsC

New in Geoderma: "Lithology and bioclimate impacts on soil organic phosphorus speciation and the relationship between phosphatase and organic phosphorus in California temperate forest" by Suwei Xu, Chunhao Gu [...] Andrew J Margenot. buff.ly/opdSzhI University of Illinois Cal Poly

The study takes place at the #MorrowPlots, the oldest experimental ag field in the U.S. 📷 Historical photos included below offer a rare glimpse into the legacy of this iconic site. Andrew Margenot Crop Sciences